The microstructures and electrochemical properties of La1-x Cex Ni3.54 CO0.78 Mn0.35 A10.32 hydrogen storage electrode alloys
Abstract：The hydrogen storage alloys La1- x Ce Ni3.54 Coo. 78 Mn0 35 A10.32 （ x = 0. 1,0.2,0. 3,0.4,0.5,0.6 ） were synthesized by induction melting and heat treatment. XRD analysis indicated that the alloys consisted of a single CaCu5 -type phase. The electrochemical performance test showed that with increasing x value, the maximum discharge capacity decreased monotonically from 348.1 to 310. 1 mAh/g. For the discharge current density of 1200 mA/g, the HRD of the alloy electrode first increased from 28.6% （x = O. 1 ） to 65.4% （x = 0.5） , and then decreased to 60. 1% （x = O. 6）. This was mainly attributed to the electrocatalytic activity for charge - transfer reaction at the electrode/electrolyte interface and the hydrogen diffusion in the bulk of alloys, which increased first and then decreased.
Keywords：Hydregen storage alloyelectrochemical performancekinetics performance
Publication Date：2012-05-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 334-339 )